Heel trimmer guard



Aril 23, 1935. f

Filed Nov. 7, 19:52`

ilillrl J\ll| |l|| lll lllllll www Patented Apr. 23, 1935 UNITED STATESPATENT OFFICE 1 Claim.

This invention relates to a guard for the heel trimming knife of amachine used in shops for trimming lifts, replaced'on shoes.

The principal objects of the invention are to provide an effective guardfor the rotating knife which trims the convex surface of the lift; toprovide this guard with means by which it can be adjusted relative tothe rotating trimming knife, both longitudinally and laterally, and toprovide means on the guard for protecting the covering on the heel abovethe lift from being engaged in any way by the cutter and therebydamaged.

Other objects and advantages of the invention will appear hereinafter. Y

Reference is to be had to the accompanying drawing, in which Fig. 1 is aside view of a part of a heel trimming machine of a well known typeprovided with a preferred embodiment of this invention;

. Fig. 2 is an end View of the guard;

Fig. 3 is a plan ofthe same with parts in section on the line 3-3 ofFig. 2.

Fig. 4 is an end view of the main part of the guard itself, and f Fig. 5is a similar view of an additional guard plate adjustably mounted on theend of the guard shown in Fig. 4.

The invention is shown as applied to a machine of well known type havinga driving shaft III provided on the end thereof with a heel trimmingcutter Il adapted to operate on the lift of a heel of a shoe in themanner shown in Fig. 3. 'I'his cutter, of course, is old and operates inthe usual way. The main diiiiculty that this invention is designed toavoid is the accidental slipping of this cutter above the lift I2 andcutting into the covering I3 with which the main part of the heel iscovered.

This guard comprises a stationary sleeve I4 through which the shaft I0of the cutter I I passes and in which it is centered. This sleeve I4 ismounted in bearings on the machine frame I6 and is provided with alongitudinal slot I1` for oil. On the end of this sleeve is a head I8which extends to the rear surface of the trimming cutter I I and isslightly greater in diameter than this cutter.

On this head is mounted a main guard 20. This guard is provided withlongitudinal slots in which screws 2l are located for the purpose ofsetting the guard 20 in adjusted positions on the head I8. This guard 2Dextends throughout more than a half circle and guards the back of thecutter. It has a flat end plate 22 whichl extends throughout just abouta half circle and closes the end ofthe guard to that extent but it has asemicircular opening. This end plate22 is provided with two parallelopposite tangential slots 23 for receiving a pair of fastening screws 24for securing to this top plate a second flat semi-circular plate 25 inadjusted position. 'I'he convex surface of the edge of this plate 25 isexposed between the longitudinal edges 26`of the guard 20, which edgesconstitute the extreme boundary of that guard and leave a space on theside toward the Work. The plate 25`is adjusted preferably so that itfurnishes a guard for engaging the covering I3 on the heel of the shoebeing operated upon, thus keeping the cutter away from the covering atthat point. 'This constitutes an important feature of the guard and itis adjustable to whatever position may be necessary.

Another feature of the guard consists of an arcuate plate 28 which maybe of sheet metal and is held in position by -two screws 29 extendinginto the headV I8.` This plate preferably is provided with two slots 30arranged longitudinally so that it can be adjusted in an axialdirection. The purpose of this plate is to engage the bottom of the liftas shown in Fig. 3 and thus locate the shoe in proper position withrespect to the cutter and the guard plate 25.

From this it Will be seen that the guarding device is very simple, thatit accurately locates the heel and lift, absolutely prevents the cutterfrom digging into the covering I3 above the lift, and that these partsare all readily adjustable for different shoes. In adjusting, the screwssimply have to be loosened `and the various elements can be adjustedandfastened again without removing the screws or getting the parts outof proper position. The device is designed particularly for ladies shoesand is shown as operating upon a ladys shoe but the principle is capableof general application. y

Although I have illustrated and described only one -form of theinvention I am aware of the fact that modifications can be made thereinby any person skilled in the art without departing from the scope of theinvention as expressed in the claim. Therefore I do not wish to belimited in this respect otherwise than as set forth in the claim butwhat I do claim isz- As an article of manufacture, a heel trimmer guardcomprising a head, a convex semi-cylindrical guard fixed to said headand longitudinally adjustable with respect thereto, an arcuate platekmounted on the opposite side of said head and longitudinally adjustablethereon, independently of the adjustment of the guard, for engaging thebottom of a lift to be trimmed, and means independent of said platecarried by said guard for engaging the covering of the heel above thelift and protecting the same from the cutter.

. ROBERT G. SMITH.

